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One-step heat treatment to process semi-coke powders as an anode material with superior rate performance for Li-ion batteries
“Turning waste into wealth” and sustainable development are bright themes of modern society. Semi-coke is mainly made up of coal but contains around 15 wt% impurities. Nevertheless, semi-coke powders with sizes smaller than 3 mm generally cannot be used in metallurgical industries and are abandoned...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9091659/ https://www.ncbi.nlm.nih.gov/pubmed/35559278 http://dx.doi.org/10.1039/c8ra07899h |
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author | Shi, Ming Chen, Yuanzhen Wen, Hua Liu, Yongning |
author_facet | Shi, Ming Chen, Yuanzhen Wen, Hua Liu, Yongning |
author_sort | Shi, Ming |
collection | PubMed |
description | “Turning waste into wealth” and sustainable development are bright themes of modern society. Semi-coke is mainly made up of coal but contains around 15 wt% impurities. Nevertheless, semi-coke powders with sizes smaller than 3 mm generally cannot be used in metallurgical industries and are abandoned as solid waste, resulting in environmental contamination. Herein, boron doping followed by facile one-step heat treatment in the range of 2100 to 2700 °C has been carried out to process semi-coke powder waste. Thereby, the semi-coke powders can be graphitized to give sample carbon content values of over 95%. The best product so-prepared delivered reversible capacities of 351.5 mA h g(−1) at 0.1C, and 322 mA h g(−1) at 1C. Surprisingly, the capacity was maintained at 314.3 mA h g(−1) after 300 cycles at 1C, giving a decline rate of only 2.4% and presenting superior rate performance. |
format | Online Article Text |
id | pubmed-9091659 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90916592022-05-11 One-step heat treatment to process semi-coke powders as an anode material with superior rate performance for Li-ion batteries Shi, Ming Chen, Yuanzhen Wen, Hua Liu, Yongning RSC Adv Chemistry “Turning waste into wealth” and sustainable development are bright themes of modern society. Semi-coke is mainly made up of coal but contains around 15 wt% impurities. Nevertheless, semi-coke powders with sizes smaller than 3 mm generally cannot be used in metallurgical industries and are abandoned as solid waste, resulting in environmental contamination. Herein, boron doping followed by facile one-step heat treatment in the range of 2100 to 2700 °C has been carried out to process semi-coke powder waste. Thereby, the semi-coke powders can be graphitized to give sample carbon content values of over 95%. The best product so-prepared delivered reversible capacities of 351.5 mA h g(−1) at 0.1C, and 322 mA h g(−1) at 1C. Surprisingly, the capacity was maintained at 314.3 mA h g(−1) after 300 cycles at 1C, giving a decline rate of only 2.4% and presenting superior rate performance. The Royal Society of Chemistry 2018-12-10 /pmc/articles/PMC9091659/ /pubmed/35559278 http://dx.doi.org/10.1039/c8ra07899h Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Shi, Ming Chen, Yuanzhen Wen, Hua Liu, Yongning One-step heat treatment to process semi-coke powders as an anode material with superior rate performance for Li-ion batteries |
title | One-step heat treatment to process semi-coke powders as an anode material with superior rate performance for Li-ion batteries |
title_full | One-step heat treatment to process semi-coke powders as an anode material with superior rate performance for Li-ion batteries |
title_fullStr | One-step heat treatment to process semi-coke powders as an anode material with superior rate performance for Li-ion batteries |
title_full_unstemmed | One-step heat treatment to process semi-coke powders as an anode material with superior rate performance for Li-ion batteries |
title_short | One-step heat treatment to process semi-coke powders as an anode material with superior rate performance for Li-ion batteries |
title_sort | one-step heat treatment to process semi-coke powders as an anode material with superior rate performance for li-ion batteries |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9091659/ https://www.ncbi.nlm.nih.gov/pubmed/35559278 http://dx.doi.org/10.1039/c8ra07899h |
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